Problem 43035. Non trivial identities - differentiation

Solution 995598

Submitted on 5 Oct 2016 by LY Cao
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Test Suite

Test Status Code Input and Output
1   Pass
for k=1:20 x=randperm(k); assert(isequal(identity(x),x)); end assert(~isempty(strfind(fileread('identity.m'), 'diff')),'use diff')

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